*{
    margin: 0;
    padding: 0;
}
a{
    all: unset;
}
#root{
    /* height: 100vh;
    overflow-y: scroll; */
}
#header{
    z-index: 100;
    position: fixed;
    display: flex;
    justify-content: center;
    box-shadow: 0 2px 10px 0px rgba(0, 0, 0, 0.5);
    width: 100%;
    height: 50px;
    background-color: #FFFFFF;
}
#header_content{
    position: relative;
    width: 95%;
    font-size: 22px;
    color: #94a38b;
}
.goButton{
    color: #ff0000;
    cursor: pointer;
}
.left{
    height: 50px;
    line-height: 50px;
    position: absolute;
    left: 0;
}
.right{
    height: 50px;
    line-height: 50px;
    position: absolute;
    right: 0;
}
#footer{
    display: flex;
    justify-content: center;
    width: 100%;                
    background-color: #F7F8FA;
}
#footer_content{
    margin-top: 50px;
    width: 1200px;
}   
.introduce{
    position: relative;
    width: 100%;
    height: 280px;  
    background-image: linear-gradient(to right, rgba(255, 215, 0, 0.7), rgba(138, 43, 226, 0.8));
    background-color: gray;
}
.introduce_center{
    line-height: 280px; 
    text-align: center;
    font-size: 25px;
}
.introduce_leftContent{
    position: absolute;
    left: 20px;
    bottom: 20px;
    font-size: 18px;
    font-weight: 700;
}
.nav{
    overflow-x: scroll; /* 设置为 auto 或 scroll 均可 */
    overflow-y: hidden;
    white-space: nowrap; /* 防止换行 */
    width: 100%;
    height: 80px;
    margin: 24px 0 50px;
    /* background-color: gray; */
}
.nav::-webkit-scrollbar {
    /* display: none; */
    width: 8px; /* 设置滚动条宽度 */
    height: 4px;
}

.nav::-webkit-scrollbar-thumb {
    background-color: #ccc; /* 设置滑块颜色 */
    border-radius: 4px; /* 设置滑块圆角 */
}

.nav::-webkit-scrollbar-track {
    background-color: #FFFFFF; /* 设置轨道颜色 */
}
.nav_demo{
    display: inline-block;
    border-radius: 10px;
    font-size: 18px;
    text-align: center;
    margin: 20px 10px;
    padding: 5px 10px;
    line-height: 40px;
    cursor: pointer;
    color: black; /* 保持文字颜色为黑色 */
    font-weight: 400;
}
.nav_demo:hover{    
    background-color: rgb(0,0,0,0.05); /* 修改为悬停时的背景颜色 */
}
.nav_content{
    display: flex;
    flex-wrap: wrap;
    width: 100%;
    /* 高度应该让里面的盒子撑开 */
    margin: 24px 0 10px;
    /* background-color: gray; */
}
.card {
    position: relative;
    width: 366px;
    height: 170px;
    margin: 10px;
    padding: 5px 0 10px 5px;
    background-color: #FFFFFF;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1); /* 水平偏移量 0px，垂直偏移量 4px，模糊半径 8px，阴影颜色透明度 0.1 */
    /* 添加动画效果 */
    transition: transform 0.3s ease;
}
/* 添加动画效果 */
.animate {
    animation: stackUp 0.5s ease forwards;
}

@keyframes stackUp {
    0% { transform: translateY(50px); opacity: 0; }
    100% { transform: translateY(0); opacity: 1; }
}

/* 鼠标悬停时的动画效果 */
.card:hover {
    background-color: #d2cfcf; 
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2); /* 悬停时增加阴影深度 */
    transform: translateY(-5px); /* 向上浮动 5px */
}
.card:hover .card_button{
    background-color: #FFFFFF;
}
.tag {
    display: inline-block;
    padding: 5px; /* 设置宽度和高度为 padding */
    margin: 3px;
    font-size: 12px; /* 字体大小 */
    font-weight: bold; /* 字体粗细 */
    border-radius: 5px; /* 边框圆角 */
    text-align: center; /* 文本居中 */
}
.card_header{
    width: 100%;
    font-size: 20px;
    font-weight: 700;
    padding: 1px 5px;
    color: #1f2937;
}
.card_tags{
    width: 100%;
    margin: 5px 0;
    font-size: 12px;
}
.card_introduction{
    font-size: 14px;
    padding: 5px;
}

.card_button{
    position: absolute;
    right: 10px;
    bottom: 10px;
    z-index: 100;
    display: block;
    width: 50px;
    height: 25px;
    padding: 0 4px;
    line-height: 25px;
    cursor: pointer;
    font-size: 12px;
    border-radius: 5px;
    border: 1px solid #ccc  ;
}

.card_button:hover{
    background-color: #a7a2a2 !important   ;
}

.webInformation{
    width: 100%;
    height: 50px;
    line-height: 50px;
    text-align: center;
    /* background-color: #94a38b;    */
}